Tkinter rename reversal: remove tkinter package, adapt imports and docs.
diff --git a/Lib/idlelib/ScriptBinding.py b/Lib/idlelib/ScriptBinding.py
index c6892f3..cb01110 100644
--- a/Lib/idlelib/ScriptBinding.py
+++ b/Lib/idlelib/ScriptBinding.py
@@ -22,7 +22,7 @@
 import string
 import tabnanny
 import tokenize
-import tkinter.messagebox as tkMessageBox
+import tkMessageBox
 import PyShell
 
 from configHandler import idleConf